FGFR4 and type 2 diabetes mellitus: Finally, the FGFR family contributes broadly, with FGFR1 colocalized in skeletal muscle for IR/T2D, FGFR4 in visceral adipose tissue for IR/T2D, and FGFR2 in visceral adipose tissue for WHR, highlighting the relevance of this family of receptors in metabolic regulation [72].